一、
good - better - best(固定变法)
thin - thinner -thinnest(常规变法 +er est)
ill - worse - worst(固定变法)
busy - busier - busiest(y结尾 通常变y为i后+er est)
important - more important - the most important(三音节以上+more the most 如:beautiful )
many - more - most(固定变法)
二、
cloudy sunny careful thankful worried interesting dead friendly healthy dangerous woolen Janpanese
三、terribly fully sadly